U1140 Code - Lost Communication With Active Exhaust Valve 2
Quick Answer
The U1140 diagnostic trouble code (DTC) indicates that there has been a loss of communication with Active Exhaust Valve 2 in the vehicle's exhaust system. Common causes include Faulty active exhaust valve 2, Wiring or electrical issues, Corrosion or damage to connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1140 indicates Lost Communication With Active Exhaust Valve 2.
- Common causes
- Common causes include Faulty active exhaust valve 2, Wiring or electrical issues, Corrosion or damage to connectors.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code U1140 Description
The U1140 diagnostic trouble code (DTC) indicates that there has been a loss of communication with Active Exhaust Valve 2 in the vehicle's exhaust system. This can have significant implications for the vehicle's performance, as the active exhaust valve plays a crucial role in regulating exhaust flow and noise levels. When communication is lost with this component, the vehicle may experience decreased engine performance, reduced fuel efficiency, and potentially even engine misfires or stalling. Additionally, the active exhaust valve is responsible for managing exhaust emissions, so a malfunction in this system could lead to the vehicle failing emissions tests.
Common Causes of U1140
- Faulty active exhaust valve 2
- Wiring or electrical issues
- Corrosion or damage to connectors
- Software or communication system malfunction
- Environmental factors such as moisture or debris affecting the system
Symptoms of U1140
- Engine misfires or stalling
- Reduced engine performance
- Increased exhaust noise
- Decreased fuel efficiency
- Check Engine Light illuminated on the dashboard
How to Fix U1140
- Diagnose the issue using a scan tool to pinpoint the exact cause of the communication loss.
- Inspect wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the active exhaust valve 2 for proper functioning and replace if found to be faulty.
- Clear the DTC and reset the vehicle's system to ensure proper communication is restored.
- Perform a test drive to verify that the issue has been successfully resolved.
Cost to Fix U1140
The cost of repairing a lost communication with Active Exhaust Valve 2 can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair cost for this type of problem can range from $200 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary, so it's recommended to consult with a professional mechanic for a more accurate estimate based on your location and vehicle.
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Code U1140 Information for Specific Makes
- U1140 Chrysler — Lost Communication With Active Exhaust Valve 2
- U1140 Dodge — Lost Communication With Active Exhaust Valve 2
- U1140 Jeep — Lost Communication With Active Exhaust Valve 2
- U1140 RAM — Lost Communication With Active Exhaust Valve 2
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